The crime fighting code-breakers are back on 6 January for The Bletchley Circle season two. The hit ITV drama, returns with two all-new stories each consisting of two 60 minute episodes. In the first story, Bletchley veteran Alice Merren (Hattie Morahan) is accused of murder. As she awaits trial, her former colleagues set about trying to identify the real culprit.

Season one regulars Julie Graham, Sophie Rundle, Anna Maxwell-Martin and Rachael Stirling all return for season 2. Season one aired on some PBS affiliates in the U.S. and is currently available through Netflix. Click the link below for a preview of the new season.